Cooling tank arrangement for liquid cooling of a charging station for electrically powered motor vehicles, base arrangement for a charging station with such a cooling tank arrangement and charging station with such a base arrangement

Abstract

Cooling tank arrangement (29) for liquid cooling of a charging station (1) for electrically powered motor vehicles, comprising a cooling tank (13) and thermal insulation (37) encompassing at least sections of the cooling tank (13), characterized in that the insulation (37) has a flat base surface (39) and a top surface (41) at least substantially parallel to it, as well as a wall (43) connecting the base surface (39) with the top surface (41), wherein the top surface (41), the base surface (39) and the wall (41) define a receiving space (45) in which the cooling tank (13) is arranged, wherein a filling nozzle (73) is arranged on the cooling tank (13) and is fluidically connected to an interior of the cooling tank (13), opening into the interior of the cooling tank (13) in a geodetically lower region and extending from there towards a filling opening (75) of the filling nozzle. (73) increases,wherein the filling opening (75) is arranged below a predetermined fill level (77) of the cooling tank (13).

Description

[0001] The invention relates to a cooling tank arrangement for liquid cooling of a charging station for electrically driven motor vehicles, a base arrangement for a charging station with such a cooling tank arrangement and a charging station with such a base arrangement.

[0002] German patent application DE 10 2017 217 879 A1 discloses a charging station for charging an electrically powered motor vehicle, the power electronics of which can be cooled using an underground liquid cooling system. Even with above-ground charging stations, which do not require excavation work, there is a need to provide effective and efficient cooling. Known concepts have the particular disadvantage of high costs associated with logistics, particularly transport and the installation of a cooling tank within a charging station housing. Furthermore, maintenance is generally complex and time-consuming, especially if the cooling tank is nested within the charging station housing.

[0003] DE 10 2020 126 413 B3 discloses a cooling tank assembly according to the preamble of claim 1. DE 195 10 490 A1 discloses insulation for a heat storage device. A base assembly for a charging station for electrically powered motor vehicles is disclosed in CN 2 08 324 950 U. Charging stations for electric vehicles and options for temperature control are also disclosed in DE 10 2017 115 641 A1, DE 10 2019 112 076 A1, and DE 10 2019 112 839 B3.

[0004] The invention is based on the object of providing a cooling tank arrangement for liquid cooling of a charging station for electrically driven motor vehicles, a base arrangement for a charging station with such a cooling tank arrangement and a charging station with such a base arrangement, wherein the aforementioned disadvantages are at least reduced, preferably do not occur.

[0005] The object is achieved by providing a cooling tank arrangement for liquid cooling of a charging station for electrically powered motor vehicles having the features of claim 1, a base arrangement having the features of claim 4, and a charging station having the features of claim 9. Advantageous embodiments emerge from the subclaims.

[0006] The cooling tank arrangement comprises a cooling tank and thermal insulation that surrounds the cooling tank at least in sections, preferably completely. The insulation has a flat base surface and a cover surface that is at least substantially parallel, in particular parallel, thereto, as well as a wall connecting the base surface to the cover surface. The cover surface, the base surface, and the wall delimit a receiving space in which the cooling tank is arranged. The insulation can advantageously also be used as packaging for the cooling tank, in particular during transport of the cooling tank. This saves transport and packaging material in an environmentally friendly manner, and both the transport and installation of the cooling tank at the destination are particularly simple, since neither packaging material needs to be removed nor additional insulation material applied.

[0007] In particular, the insulation is designed as packaging, in particular as transport packaging for the cooling tank.

[0008] In particular, the receiving space has the shape of the cooling tank, so that the cooling tank can be arranged closely in the receiving space.

[0009] The wall extends, in particular, perpendicular to the base surface and perpendicular to the top surface. In particular, the wall is a peripheral wall of the insulation.

[0010] In the context of the present technical teaching, the base surface is understood to mean, in particular, a surface of the insulation that is intended to be arranged on a geodetically lower side of the insulation and thus also on the cooling tank arrangement. The top surface is accordingly, in particular, a surface that is intended to be arranged on a geodetically upper side of the insulation and thus also on the cooling tank arrangement.

[0011] The insulation, in particular, has a self-supporting, particularly stackable, shape. This advantageously allows the insulation to be installed in a self-supporting manner, particularly in a warehouse and / or on a pallet. It is also advantageously possible to stack a plurality of insulation units, particularly with a cooling tank arranged therein, and thus store and transport them in a space-saving manner, particularly on a pallet.

[0012] In one embodiment, the insulation is essentially cuboid-shaped, or the insulation is designed such that it can be arranged within an imaginary cuboid volume, with each surface of the imaginary cuboid being at least touched by a boundary surface of the insulation. In particular, this makes the insulation easy to transport and stack.

[0013] In particular, the insulation is no larger in terms of its external dimensions than a standard commercial packaging or a conventional standard pallet.

[0014] In particular, the insulation comprises or consists of polypropylene, especially expanded polypropylene. This advantageously makes the insulation recyclable.

[0015] In particular, the cooling tank is designed to be completely enclosed on all sides, especially with the exception of the inlets and outlets necessary for operation. In particular, the insulation is also designed to be completely enclosed on all sides, especially with the exception of the necessary penetrations for the inlets and outlets necessary for the operation of the cooling tank.

[0016] According to a further development of the invention, the insulation comprises two half-shells, in particular an upper and a lower half-shell, which enclose the receiving space. This represents a simple yet functional design of the insulation. In particular, the two half-shells enclose the cooling tank. In particular, the half-shells each have a complementary shape to the cooling tank on the inside, so that they can be arranged tightly against the outside of the cooling tank.

[0017] In particular, the two half-shells interlock in such a way that the insulation is closed on all sides - especially with the exception of the necessary penetrations for the inlets and outlets required for the operation of the cooling tank.

[0018] The two half-shells are each designed as an injection-molded part, in particular manufactured by injection molding.

[0019] The cooling tank is particularly designed to hold a cooling liquid, in particular a glycol-water mixture as a coolant.

[0020] In an embodiment not forming part of the invention, the cooling tank can be manufactured seamlessly using a rotating plastic injection molding process. This allows the cooling tank to be advantageously designed to be particularly leak-tight, so that leakage of coolant directly from the cooling tank can be virtually eliminated.

[0021] According to a further development of the invention, a venting hose is arranged on the cooling tank, which is fluidically connected, on the one hand, to the interior of the cooling tank and, on the other hand, to the surroundings of the cooling tank. The venting hose runs along at least one turn—in particular, one that rises geodetically from the cooling tank. This advantageously effectively prevents coolant from spilling from the filled cooling tank into the surroundings when the cooling tank is moved. This advantageously makes it possible to transport the filled cooling tank. This eliminates, in particular, the step of filling it at the installation site.

[0022] The vent hose is arranged geodetically at the top of the cooling tank. In particular, the vent hose is fluidically connected to a vent opening of the cooling tank arranged geodetically at the top of the cooling tank.

[0023] In one embodiment, the vent hose is open on both sides. This advantageously provides a fluidic connection to the environment via the vent hose at all times, especially during transport of the cooling tank. This eliminates the need to open the vent hose at the installation site, ensuring particularly high levels of safety during operation of a charging station containing the cooling tank, as a worker cannot forget to open the hose.

[0024] The vent hose can also be used to pressure test the cooling tank for leaks before filling it.

[0025] According to the invention, a filling nozzle is arranged on the cooling tank, which is fluidly connected to the interior of the cooling tank. This nozzle opens into the interior of the cooling tank at a geodetically lower region and, from there, rises toward a filling opening of the filling nozzle. In this way, the cooling tank can be easily filled without the use of a pump, in particular from a canister or the like. A pump can also be used to increase the flow and fill the cooling tank more quickly.

[0026] The filling opening is located below a predetermined fill level in the cooling tank. This advantageously allows the cooling tank to be emptied without a pump, using the communicating tube principle.

[0027] In one embodiment, the filling nozzle has a check valve and / or a quick coupling in the area of ​​the filling opening.

[0028] The object is also achieved by providing a base assembly for a charging station for electrically powered motor vehicles, wherein the base assembly has a support frame on or in which a cooling tank for receiving coolant and a conveying device for conveying the coolant are arranged. Preferably, the base assembly provides a module that can be handled, in particular transported, separately from other parts of a charging station, in particular separately from a housing of the charging station. This simplifies the transport and installation of the base assembly and the charging station, as well as subsequent maintenance work. The associated costs are thus also low.

[0029] In particular, the conveying device is fluidically connected to the cooling tank. In particular, the base assembly has at least one first connecting element for mechanical connection to a housing of a charging station, first fluid connections for fluidly connecting the conveying device and the cooling tank to coolant lines of the charging station, and first electrical connections for operative connection to a control device and / or a power supply of the charging station. This allows for rapid, modular transport and assembly of the charging station.

[0030] In one embodiment, the first connecting element is designed as a screw element, in particular selected from a group consisting of: a screw bore, a threaded element, in particular a nut or a thread introduced into the support frame, a stud bolt, and a threaded pin.

[0031] In one embodiment, the base assembly comprises a plurality of first connecting elements.

[0032] In one embodiment, the first fluid connections are designed as quick couplings or in another suitable manner.

[0033] In one embodiment, the first electrical connections are designed as plug connectors.

[0034] The base assembly comprises a cooling tank assembly according to the invention or a cooling tank assembly according to one or more of the previously described embodiments. In connection with the base assembly, the advantages that were previously explained in connection with the cooling tank assembly are particularly evident.

[0035] According to a further development of the invention, the base assembly is designed to be installed above ground. Advantageously, no excavation work is required to install the base assembly and thus the charging station.

[0036] According to a further development of the invention, the conveyor device is mounted in the support frame in a vibration-damped manner. Alternatively or additionally, the conveyor device is mounted in the support frame in a structure-borne sound-insulated manner. This advantageously reduces noise generation during operation of a charging station having the base arrangement.

[0037] In particular, a pump group receptacle is arranged on a base plate of the support frame via at least one damping element, in particular a plurality of damping elements. In one embodiment, the at least one damping element is screwed to the base plate. In one embodiment, the pump group receptacle is designed as a bent sheet metal part or formed from bent sheet metal. A pump group comprising the conveying device is arranged, in particular fastened, to the pump group receptacle.

[0038] In one embodiment, the pump group can be placed onto the pump group holder, in particular from a front side of the support frame, or pushed into the pump group holder and - also from the front side - screwed to the pump group holder, in particular with at least one to a maximum of four screws, in particular with three screws.

[0039] In one embodiment, the pump group comprises a sheet metal frame to which the conveying device is attached. In particular, the sheet metal frame can be placed on the pump group mount or pushed into the pump group mount and screwed to the pump group mount. The pump group mount has, in particular, on a rear side facing away from the front, a spring element, in particular a sheet metal spring tongue, which applies a holding force to the sheet metal frame when the sheet metal frame is arranged on the pump group mount. In particular, the sheet metal frame can be pushed under the spring element from the front.

[0040] According to a further development of the invention, the support frame is provided with handling access points on both sides, particularly accessible from the front. This allows the support frame and thus the base assembly to be easily handled, relocated, and, in particular, installed at a location.

[0041] In particular, the support frame has support elements on both sides, which in turn have the handling inlets. In particular, the base plate is arranged between the support elements and connects them to one another.

[0042] In one embodiment, the base assembly further comprises at least one covering element that can be arranged on the support frame to cover the handling access points and, in particular, at least the front side. This advantageously provides an aesthetic appearance of the base assembly for an external observer.

[0043] In one embodiment, the handling indentations are designed as forklift indentations for the engagement of a forklift truck. This enables particularly simple and efficient handling.

[0044] According to a further development of the invention, it is provided that the support frame has or forms a collecting tray for collecting at least part of the coolant arranged in the cooling tank.

[0045] In particular, the base plate is designed as a collecting tray or forms the collecting tray.

[0046] In one embodiment, the base assembly has at least one sensor for detecting liquid entering the collecting tray and / or for detecting a coolant leak. In one embodiment, the at least one sensor is selected from a group consisting of a float switch and a proximity switch.

[0047] In particular, at least a first sensor of the at least one sensor is arranged in the region of the collecting tray and configured to detect liquid entering the collecting tray, in particular coolant or water penetrating from outside—for example, as a result of flooding. In one embodiment, the first sensor is designed as a float switch.

[0048] Alternatively or additionally, the base arrangement comprises, as at least one second sensor of the at least one sensor, a fill level sensor arranged and configured to detect a fill level of the coolant in the cooling tank. If coolant escapes from a cooling circuit of the charging station, this can thus be detected via a decrease in the fill level in the cooling tank. In one embodiment, the second sensor is designed as a proximity switch—in particular arranged on the cooling tank. The proximity switch can advantageously be arranged on the outside of the cooling tank or on the insulation, so that the cooling tank, and in particular also the insulation, can be designed to be closed on all sides.

[0049] In one embodiment, the base assembly comprises the first sensor and the second sensor. In particular, based on a combination of sensor signals from the first sensor and the second sensor, at least one event selected from a coolant leak and water entering the collecting tray from the outside is detected. In particular, based on the combination of sensor signals, a distinction can be made between the aforementioned events: If a first sensor signal from the first sensor indicates liquid entering the drip tray, while a second sensor signal from the second sensor simultaneously indicates no change in the fill level in the cooling tank, it can be concluded that water is entering the drip tray from outside – for example, due to flooding with a water level higher than one edge of the drip tray. If, on the other hand, the first sensor signal indicates liquid entering the drip tray, while the second sensor signal simultaneously indicates a decrease in the fill level in the cooling tank, it can be concluded that a coolant leak is present. In both cases, the charging station can be shut down for safety reasons.

[0050] The object is also achieved by providing a charging station with a housing and a base arrangement according to the invention or a base arrangement according to one or more of the previously described embodiments. The housing is designed to be arranged above the base arrangement, in particular on the base arrangement. In connection with the charging station, in particular those advantages arise which were already described above in connection with the base arrangement or the cooling tank arrangement. Since the base arrangement can also be arranged below the housing, it is advantageously avoided that coolant escaping from the cooling tank arrangement can run into the housing and impair the electrical components arranged there.

[0051] In electrical engineering, a charging station refers to any device or electrical system, particularly stationary or mobile, that supplies energy to mobile battery-operated devices, machines, or motor vehicles simply by plugging or unplugging them, without necessarily having to remove the energy storage device—such as the traction battery of an electric car. Charging stations for electric cars are sometimes also referred to as "charging stations" and can include multiple charging points. Particularly well-known are direct current fast-charging systems (high-performance charging systems or high-power charging systems, HPC systems), such as the so-called combined charging system (CCS) common in Europe.In generic direct current charging, direct current from the charging station is fed directly into the vehicle's battery. This is provided for this purpose by a powerful rectifier, preferably the charging station, from the power grid, or by large buffer batteries at solar charging stations, for example. The vehicle contains a battery management system that communicates directly or indirectly with the charging station to adjust the current and voltage or to terminate the process when a predetermined capacity limit is reached. The power electronics are usually located in the charging station. Because the DC connections of the charging station are connected directly to the corresponding connections of the traction battery - without going through an AC / DC converter in the vehicle - high charging currents can be transmitted with low losses, which enables short charging times.

[0052] In one embodiment, the charging station is designed as a charging column. In particular, the charging station has at least one charging point, in particular exactly one charging point or exactly two charging points.

[0053] In particular, the charging station is designed as a rapid charging station. In one embodiment, the charging station is designed as a battery-assisted charging station, in particular as a battery-assisted rapid charging station.

[0054] In particular, the housing has at least one second connecting element for mechanical connection to the base arrangement, in particular to the at least one first connecting element.

[0055] In particular, the housing comprises a front panel, a back panel opposite the front panel, and side panels on both sides, with at least one of the side panels being designed as a door. In one embodiment, both side panels are designed as doors. The side panels are, in particular, slightly longer geodetically downwards than the front panel and the back panel, with the side panels concealing the first and second connecting elements when the housing is placed on the base assembly and mechanically connected to the base assembly.

[0056] In one embodiment, the housing has a roof panel on which at least one lifting element, in particular a lifting eye, is arranged, by means of which the housing can be lifted, in particular lifted from the base assembly or lowered onto the base assembly. In one embodiment, the roof panel has four corners and a lifting element, in particular a lifting eye, at each corner.

[0057] According to a further development of the invention, it is provided that electrical components of the charging station are arranged in the housing, in particular the power electronics and preferably a battery arrangement for temporarily storing electrical energy, a control device, and also in particular second electrical connections for operatively connecting the control device and / or at least one electrical component to the conveying device and in particular to at least one sensor, in particular selected from the first sensor and the second sensor, in particular to the first electrical connections, and furthermore in particular cooling lines for cooling the electrical components, and second fluid connections for fluidically connecting the cooling lines to the conveying device and the cooling tank, in particular to the first fluid connections.

[0058] In one embodiment, the control device is configured to control the conveying device. Alternatively or additionally, the control device is configured to use at least one sensor signal, in particular selected from a first sensor signal of the first sensor and a second sensor signal of the second sensor, to infer at least one event, selected from a coolant leak and water entering the collecting tray from the outside. The control device is in particular further configured to terminate operation of the conveying device when the at least one event is detected. In this way, leakage of coolant can advantageously be prevented at an early stage, which particularly advantageously allows the receiving volume of the collecting tray to be designed smaller than the volume of the cooling tank.Furthermore, damage or endangerment to the charging station or users of the charging station—in particular due to electrical short circuits or high voltage in the water during flooding—can be advantageously prevented. In particular, the control device is configured to distinguish between the aforementioned events based on the combination of sensor signals, in particular as previously explained in connection with the base arrangement. Alternatively or additionally, the control device is configured to report the at least one detected event to an operator or service provider of the charging station.

[0059] In one embodiment, the second connecting element is designed as a screw element, in particular selected from a group consisting of: a screw bore, a threaded element, in particular a nut or a thread introduced into the housing, a stud bolt, and a threaded pin.

[0060] In one embodiment, the housing has a plurality of second connecting elements.

[0061] In one embodiment, the second fluid connections are designed as quick couplings or in another suitable manner.

[0062] In one embodiment, the second electrical connections are designed as plug connectors, in particular complementary to the first electrical connections designed as plug connectors.

[0063] The invention is explained in more detail below with reference to the drawings, which show: Fig. 1 a schematic representation of an embodiment of a charging station with an embodiment of a base arrangement; Fig. 2 a representation of the embodiment of the base arrangement; Fig. 3 a detailed view of the embodiment of the base arrangement, and Fig. 4 a detailed view of a cooling tank of the base assembly.

[0064] Fig. 1 shows a schematic representation of an embodiment of a charging station 1 with an embodiment of a base arrangement 3.

[0065] The charging station 1, which is particularly designed as a charging column, comprises a housing 5 and the base assembly 3, which is particularly positioned above ground, particularly at ground level. The housing 5 is designed to be arranged on the base assembly 5. In the exemplary embodiment illustrated here, the charging station 1 has two charging points, each with a charging cable 2 with a charging plug 4 arranged thereon.

[0066] In particular, the base assembly 3 has a plurality of first connecting elements 7 for mechanical connection to the housing 5. Furthermore, the base assembly 3 also has first fluid connections 9 for the fluidic connection of a Fig. 2 and a cooling tank 13 with second fluid connections of the charging station 1 as well as first electrical connections 15 for operative connection with second electrical connections of a control device and / or a power supply of the charging station 1.

[0067] In particular, the housing 5 has a plurality of second connecting elements 17 for mechanical connection to the base assembly 3, in particular to the first connecting elements 7. Of the second connecting elements 17, only one second connecting element 17 is schematically illustrated here.

[0068] In particular, the housing 5 comprises a front panel 19, a back panel 21, and side panels 23 on both sides, wherein the side panels 23 are designed in particular as doors. The housing 5 also comprises a roof panel 25, on which, in particular, four lifting eyes 27 are arranged.

[0069] Fig. 2 shows an illustration of the embodiment of the base assembly 3 with an embodiment of a cooling tank assembly 29.

[0070] Identical and functionally identical elements are provided with the same reference symbols in all figures, so that reference is made to the preceding description in each case.

[0071] In a) an exploded view of the base assembly 3 with the cooling tank assembly 29 is shown.

[0072] The base assembly 3 has a support frame 31 and on or in this the cooling tank assembly 29 for receiving coolant and the conveying device 11 for conveying the coolant.

[0073] In b), the cooling tank arrangement 29 is shown in a sectional view. It comprises the cooling tank 13 and a thermal insulation 37 that surrounds it at least partially, preferably completely. The insulation 37 has, in particular, a flat bottom surface 39 and a cover surface 41 that is at least substantially parallel thereto, as well as a wall 43 connecting the bottom surface 39 to the cover surface 41. The bottom surface 39, the cover surface 41, and the wall 43 delimit a receiving space 45 in which the cooling tank 13 is arranged. The insulation 37 also functions as packaging for the cooling tank 13 during transport.

[0074] The insulation has in particular two half-shells 47, namely a first half-shell 47.1 and a second half-shell 47.2, which encompass the receiving space 45, in particular the cooling tank 13.

[0075] Returning to the illustration in a), a venting hose 49 is arranged on the cooling tank 13 geodetically at the top, in particular a venting hose 49 which is fluidically connected on the one hand to an interior of the cooling tank 13 and on the other hand to an environment of the cooling tank 13 and which runs along a turn 51 which rises geodetically starting from the cooling tank 13.

[0076] The support frame 31 has, in particular, support elements 53 on both sides, on which handling indentations 55 designed as forklift indentations are formed. A base plate 57 is arranged between the support elements 53, which connects the support elements 53 to one another.

[0077] The support frame 31 also forms a collecting tray 59 for collecting at least a portion of the coolant arranged in the cooling tank 13. In particular, the base plate 57 is designed as the collecting tray 59 or forms the collecting tray 59.

[0078] The base arrangement 3 has in particular at least one sensor 61 for detecting liquid entering the collecting tray 59 and / or for detecting a coolant leak, which sensor can be designed as a float switch or as a proximity switch.

[0079] Fig. 3 shows a detailed view of the embodiment of the base arrangement 3.

[0080] The conveying device 11 is mounted in the support frame 31 in a manner particularly dampened against vibrations, in particular with structure-borne sound insulation. In particular, a pump group receptacle 63 is arranged on the base plate 57 via a damping element 65. The pump group receptacle 63 is preferably designed as a bent sheet metal part or formed from bent sheet metal. A pump group 67 comprising the conveying device 11 is fastened to the pump group receptacle 63. The pump group 67 can be inserted into the pump group receptacle 63, in particular from a front side of the support frame 31, and screwed to the pump group receptacle 63—likewise from the front side.

[0081] In particular, the pump group 63 has a sheet metal frame 69 to which the conveying device 11 is attached. The pump group receptacle 63 has, in particular on a rear side facing away from the front side, a spring element 71, particularly designed as a sheet metal spring tongue, which applies a holding force to the sheet metal frame 69 when the sheet metal frame 69 is arranged on the pump group receptacle 63. In particular, the sheet metal frame 69 can be pushed under the spring element 71 from the front side.

[0082] Fig.4 shows a detailed view of the cooling tank 13. In particular, a filling nozzle 73 is arranged on the cooling tank 13, which is fluidically connected to the interior of the cooling tank 13. This filling nozzle opens into the interior of the cooling tank 13 in a geodetically lower region and, from there, rises towards a filling opening 75 of the filling nozzle 73. In particular, the filling opening 75 is arranged below a predetermined fill level 77 of the cooling tank 13. The filling nozzle 73 has, in particular, a check valve 79 and / or a quick-release coupling 81 in the region of the filling opening 75.

Claims

[1] Cooling tank arrangement (29) for liquid cooling of a charging station (1) for electrically driven motor vehicles, comprising a cooling tank (13) and a thermal insulation (37) encompassing the cooling tank (13) at least in sections, characterized byin that the insulation (37) has a flat bottom surface (39) and a cover surface (41) which is at least substantially parallel thereto, as well as a wall (43) connecting the bottom surface (39) to the cover surface (41), wherein the cover surface (41), the bottom surface (39) and the wall (41) delimit a receiving space (45) in which the cooling tank (13) is arranged, wherein a filling nozzle (73) which is fluidically connected to an interior of the cooling tank (13) is arranged on the cooling tank (13), which opens into the interior of the cooling tank (13) in a geodetically lower region and, starting therefrom, rises in the direction of a filling opening (75) of the filling nozzle (73), wherein the filling opening (75) is arranged below a predetermined fill level height (77) of the cooling tank (13). [2] Cooling tank arrangement (29) according to claim 1, wherein the insulation (37) has two half-shells (47) which encompass the receiving space (45). [3] Cooling tank arrangement (29) according to one of the preceding claims, wherein a venting hose (49) is arranged on the cooling tank (13) which is fluidically connected on the one hand to an interior of the cooling tank (13) and on the other hand to an environment of the cooling tank (13) and which runs along at least one turn (51) - in particular one which rises geodetically starting from the cooling tank (13). [4] Base arrangement (3) for a charging station (1) for electrically driven motor vehicles, with a support frame (31) on or in which a cooling tank arrangement (29) according to one of claims 1 to 3 and a conveying device (11) for conveying the coolant are arranged, wherein the conveying device (11) is fluidically connected to the cooling tank (13), and wherein the base arrangement (3) has at least a first connecting element (7) for mechanical connection to a housing (5) of a charging station (1), first fluid connections (9) for fluidly connecting the conveying device (11) and the cooling tank (13) to coolant lines of the charging station (1) and first electrical connections (15) for operative connection to a control device and / or a power supply of the charging station (1). [5] Base arrangement (3) according to claim 4, wherein the base arrangement (3) is designed to be installed above ground. [6] Base arrangement (3) according to one of claims 4 or 5, wherein the conveying device (11) is mounted in the support frame (31) in a vibration-damped and / or structure-borne sound-insulated manner. [7] Base arrangement (3) according to one of claims 4 to 6, wherein the support frame (31) has handling indentations (55) on both sides, in particular stacker indentations for the engagement of a stacker fork of a forklift truck, wherein the base arrangement (3) preferably also has at least one cladding element which can be arranged on the support frame (31) for covering the handling indentations (55). [8] Base arrangement (3) according to one of claims 4 to 7, wherein the support frame (31) has or forms a collecting trough (59) for collecting at least part of the coolant arranged in the cooling tank (13), wherein the base arrangement (3) in particular has at least one sensor (61) for detecting at least one event selected from liquid entering the collecting trough (59) and a coolant leakage. [9] Charging station (1) with a housing (5) and a base arrangement (3) according to one of claims 4 to 8, wherein the housing (5) is designed to be arranged above the base arrangement (3) and has at least one second connecting element (17) for mechanical connection to the base arrangement (3), in particular to the at least one first connecting element (7).

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